diff options
Diffstat (limited to 'roles/openshift_preflight/base')
| -rwxr-xr-x | roles/openshift_preflight/base/library/aos_version.py | 100 | ||||
| -rwxr-xr-x | roles/openshift_preflight/base/library/check_yum_update.py | 116 |
2 files changed, 216 insertions, 0 deletions
diff --git a/roles/openshift_preflight/base/library/aos_version.py b/roles/openshift_preflight/base/library/aos_version.py new file mode 100755 index 000000000..f7fcb6da5 --- /dev/null +++ b/roles/openshift_preflight/base/library/aos_version.py @@ -0,0 +1,100 @@ +#!/usr/bin/python +# vim: expandtab:tabstop=4:shiftwidth=4 +''' +An ansible module for determining if more than one minor version +of any atomic-openshift package is available, which would indicate +that multiple repos are enabled for different versions of the same +thing which may cause problems. + +Also, determine if the version requested is available down to the +precision requested. +''' + +# import os +# import sys +import yum # pylint: disable=import-error +from ansible.module_utils.basic import AnsibleModule + + +def main(): # pylint: disable=missing-docstring + module = AnsibleModule( + argument_spec=dict( + version=dict(required=True) + ), + supports_check_mode=True + ) + + # NOTE(rhcarvalho): sosiouxme added _unmute, but I couldn't find a case yet + # for when it is actually necessary. Leaving it commented out for now, + # though this comment and the commented out code related to _unmute should + # be deleted later if not proven necessary. + + # sys.stdout = os.devnull # mute yum so it doesn't break our output + # sys.stderr = os.devnull # mute yum so it doesn't break our output + + # def _unmute(): # pylint: disable=missing-docstring + # sys.stdout = sys.__stdout__ + + def bail(error): # pylint: disable=missing-docstring + # _unmute() + module.fail_json(msg=error) + + yb = yum.YumBase() # pylint: disable=invalid-name + + # search for package versions available for aos pkgs + expected_pkgs = [ + 'atomic-openshift', + 'atomic-openshift-master', + 'atomic-openshift-node', + ] + try: + pkgs = yb.pkgSack.returnPackages(patterns=expected_pkgs) + except yum.Errors.PackageSackError as e: # pylint: disable=invalid-name + # you only hit this if *none* of the packages are available + bail('Unable to find any atomic-openshift packages. \nCheck your subscription and repo settings. \n%s' % e) + + # determine what level of precision we're expecting for the version + expected_version = module.params['version'] + if expected_version.startswith('v'): # v3.3 => 3.3 + expected_version = expected_version[1:] + num_dots = expected_version.count('.') + + pkgs_by_name_version = {} + pkgs_precise_version_found = {} + for pkg in pkgs: + # get expected version precision + match_version = '.'.join(pkg.version.split('.')[:num_dots + 1]) + if match_version == expected_version: + pkgs_precise_version_found[pkg.name] = True + # get x.y version precision + minor_version = '.'.join(pkg.version.split('.')[:2]) + if pkg.name not in pkgs_by_name_version: + pkgs_by_name_version[pkg.name] = {} + pkgs_by_name_version[pkg.name][minor_version] = True + + # see if any packages couldn't be found at requested version + # see if any packages are available in more than one minor version + not_found = [] + multi_found = [] + for name in expected_pkgs: + if name not in pkgs_precise_version_found: + not_found.append(name) + if name in pkgs_by_name_version and len(pkgs_by_name_version[name]) > 1: + multi_found.append(name) + if not_found: + msg = 'Not all of the required packages are available at requested version %s:\n' % expected_version + for name in not_found: + msg += ' %s\n' % name + bail(msg + 'Please check your subscriptions and enabled repositories.') + if multi_found: + msg = 'Multiple minor versions of these packages are available\n' + for name in multi_found: + msg += ' %s\n' % name + bail(msg + "There should only be one OpenShift version's repository enabled at a time.") + + # _unmute() + module.exit_json(changed=False) + + +if __name__ == '__main__': + main() diff --git a/roles/openshift_preflight/base/library/check_yum_update.py b/roles/openshift_preflight/base/library/check_yum_update.py new file mode 100755 index 000000000..296ebd44f --- /dev/null +++ b/roles/openshift_preflight/base/library/check_yum_update.py @@ -0,0 +1,116 @@ +#!/usr/bin/python +# vim: expandtab:tabstop=4:shiftwidth=4 +''' +Ansible module to test whether a yum update or install will succeed, +without actually performing it or running yum. +parameters: + packages: (optional) A list of package names to install or update. + If omitted, all installed RPMs are considered for updates. +''' + +# import os +import sys +import yum # pylint: disable=import-error +from ansible.module_utils.basic import AnsibleModule + + +def main(): # pylint: disable=missing-docstring,too-many-branches + module = AnsibleModule( + argument_spec=dict( + packages=dict(type='list', default=[]) + ), + supports_check_mode=True + ) + + # NOTE(rhcarvalho): sosiouxme added _unmute, but I couldn't find a case yet + # for when it is actually necessary. Leaving it commented out for now, + # though this comment and the commented out code related to _unmute should + # be deleted later if not proven necessary. + + # sys.stdout = os.devnull # mute yum so it doesn't break our output + + # def _unmute(): # pylint: disable=missing-docstring + # sys.stdout = sys.__stdout__ + + def bail(error): # pylint: disable=missing-docstring + # _unmute() + module.fail_json(msg=error) + + yb = yum.YumBase() # pylint: disable=invalid-name + # determine if the existing yum configuration is valid + try: + yb.repos.populateSack(mdtype='metadata', cacheonly=1) + # for error of type: + # 1. can't reach the repo URL(s) + except yum.Errors.NoMoreMirrorsRepoError as e: # pylint: disable=invalid-name + bail('Error getting data from at least one yum repository: %s' % e) + # 2. invalid repo definition + except yum.Errors.RepoError as e: # pylint: disable=invalid-name + bail('Error with yum repository configuration: %s' % e) + # 3. other/unknown + # * just report the problem verbatim + except: # pylint: disable=bare-except; # noqa + bail('Unexpected error with yum repository: %s' % sys.exc_info()[1]) + + packages = module.params['packages'] + no_such_pkg = [] + for pkg in packages: + try: + yb.install(name=pkg) + except yum.Errors.InstallError as e: # pylint: disable=invalid-name + no_such_pkg.append(pkg) + except: # pylint: disable=bare-except; # noqa + bail('Unexpected error with yum install/update: %s' % + sys.exc_info()[1]) + if not packages: + # no packages requested means test a yum update of everything + yb.update() + elif no_such_pkg: + # wanted specific packages to install but some aren't available + user_msg = 'Cannot install all of the necessary packages. Unavailable:\n' + for pkg in no_such_pkg: + user_msg += ' %s\n' % pkg + user_msg += 'You may need to enable one or more yum repositories to make this content available.' + bail(user_msg) + + try: + txn_result, txn_msgs = yb.buildTransaction() + except: # pylint: disable=bare-except; # noqa + bail('Unexpected error during dependency resolution for yum update: \n %s' % + sys.exc_info()[1]) + + # find out if there are any errors with the update/install + if txn_result == 0: # 'normal exit' meaning there's nothing to install/update + pass + elif txn_result == 1: # error with transaction + user_msg = 'Could not perform a yum update.\n' + if len(txn_msgs) > 0: + user_msg += 'Errors from dependency resolution:\n' + for msg in txn_msgs: + user_msg += ' %s\n' % msg + user_msg += 'You should resolve these issues before proceeding with an install.\n' + user_msg += 'You may need to remove or downgrade packages or enable/disable yum repositories.' + bail(user_msg) + # TODO: it would be nice depending on the problem: + # 1. dependency for update not found + # * construct the dependency tree + # * find the installed package(s) that required the missing dep + # * determine if any of these packages matter to openshift + # * build helpful error output + # 2. conflicts among packages in available content + # * analyze dependency tree and build helpful error output + # 3. other/unknown + # * report the problem verbatim + # * add to this list as we come across problems we can clearly diagnose + elif txn_result == 2: # everything resolved fine + pass + else: + bail('Unknown error(s) from dependency resolution. Exit Code: %d:\n%s' % + (txn_result, txn_msgs)) + + # _unmute() + module.exit_json(changed=False) + + +if __name__ == '__main__': + main() |